2008-04-22_PERMIT FILE - C1981017 ‎(15)‎

• Permit No: C1981017
• IBM Index Class Name: PERMIT FILE
• Doc Date: 4/22/2008
• Section_Exhibit Name: Chapter II-B Operation Plan - Permit Area
• Media Type: D
• Archive: No

Chapter II
(3) Central Complex/Preparation
• Plant Area .
The central complex/preparation plant area is heavily used. The area is adjacent to
Dutch and Bear Creeks.
In this area are, besides the coal preparation plant, storage facilities, coal refuse
disposal area, office/training center, maintenance shop, oil and gas storage, power
transmission lines, parking lot, etc.
The David E. Fleming Co. designed the drainage and sediment control plan for the
area in May, 1978. See Att. 3 of Ap. II-B-7.
The drainage plan has been updated as a result of new construction (blending bins)
in the plant area. A chart giving the revised sediment pond capacity calculations is
contained in the Attachment, on page 62.*
(4) Adit/Rock Tunnel.
Water discharged through the Adit/Rock Tunnel, and water flowing off the surface
disturbed areas around the tunnel portal is collected in a system of diversion ditches
and conveyed to sediment ponds.
• The Adit/Rock Tunnel portal area facilities are on both sides of the South Fork of
Dutch Creek, and all facilities are constructed above the 100-year flood plain;
normal creek runoff is routed through the portal area. To move equipment and rock
spoil from one side of the creek to the other, cross-over culverts have been installed
which are capable of handling the peak flow of the creek in a 100 year/24 hour
storm event.
A 10' diameter culvert and temporary fill is located in a tributary of the South Fork of
Dutch Creek to be used for access to the tunnel face-up and yard area. A
multi-plate pipe culvert with across-sectional area of 158 square feet has been ,
installed in the main creek to gain access to the permanent tunnel spoil disposal
area.
Water collected above the rock disposal area is diverted around it to the sediment
ponds by a 2800 foot long perimeter diversion ditch system.
TR-5 was approved Oct. 16, 1986 for constuction of two ponds, in addition to the
three previously constructed, for the Adit/Rock Tunnel area.
* TR-3, approved 8/1/86, allowed removal of one sediment pond from this area.
CJ
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